#!/usr/bin/python3

def main():
	#cont
	tpl=(1,2,3,4)
	ml=[1,2,3,4]
	mdic={"key":1 , "key2":2}
	print(tpl[0])

	for el in tpl:
		print (el)
	for i , el in enumerate(tpl):

		print(f'[{i}]={el}')
	print(*tpl,sep=",")
	(a,b,c,_)=tpl
	print(f'{a},{b},{c},{a}')
	#tpl[0]=4 #nonono
	for el in ml:
		print (el)
	for i,el in enumerate(ml):
		print(f'[{i}]={el}')
	print(*ml)
	ml[0]=3.6
	print(*ml)
	ml2=ml+ml
	print(*ml2)
	for key,value in mdic.items():
		print(f'{key}={value}')
	for el in mdic.values():
		print (el)
	for key in mdic:
		print(key)

if __name__=="__main__":
	main()